int g_LastTime;
int g_PageCount;
float g_Zoom;
-float g_ZoomTarget;
+float g_OldPosPage;
+float g_OldPosVelocity;
+float g_OldZoom;
// Drawing constants, should be parameters ======
#define VIEW_ANGLE 1.28700222f
+int g_DrawLastFrame;
+int lastFrame(int draw) {
+ // We draw one extra frame to work around the last frame post bug.
+ // We also need to track if we drew the last frame to deal with large DT
+ // in the physics.
+ int ret = g_DrawLastFrame | draw;
+ g_DrawLastFrame = draw;
+ return ret; // should return draw instead.
+}
+
+void updateReadback() {
+ if ((g_OldPosPage != g_PosPage) ||
+ (g_OldPosVelocity != g_PosVelocity) ||
+ (g_OldZoom != g_Zoom)) {
+
+ g_OldPosPage = g_PosPage;
+ g_OldPosVelocity = g_PosVelocity;
+ g_OldZoom = g_Zoom;
+
+ int i[3];
+ i[0] = g_PosPage * (1 << 16);
+ i[1] = g_PosVelocity * (1 << 16);
+ i[2] = g_OldZoom * (1 << 16);
+ sendToClient(&i[0], 1, 12, 1);
+ }
+}
+
void init() {
g_AttractionTable[0] = 6.5f;
g_AttractionTable[1] = 6.5f;
g_LastTouchDown = 0;
g_LastPositionX = 0;
g_Zoom = 0;
- g_ZoomTarget = 0;
}
void move() {
g_LastTouchDown = 0;
}
-void setZoomTarget() {
- g_ZoomTarget = state->zoomTarget;
- //debugF("zoom target", g_ZoomTarget);
-}
-
-void setZoom() {
- readback->zoom = g_Zoom = g_ZoomTarget = state->zoom;
- //debugF("zoom", g_ZoomTarget);
-}
-
int
count_pages(int iconCount)
{
g_DT = (newTime - g_LastTime) / 1000.f;
g_LastTime = newTime;
- //debugF("zoom", g_Zoom);
- if (g_Zoom != g_ZoomTarget) {
- float dz = (g_ZoomTarget - g_Zoom) * g_DT * 5;
+ if (!g_DrawLastFrame) {
+ // If we stopped rendering we cannot use DT.
+ // assume 30fps in this case.
+ g_DT = 0.033f;
+ }
+ if (g_DT > 0.2f) {
+ // physics may break if DT is large.
+ g_DT = 0.2f;
+ }
+
+ debugF("zoom", g_Zoom);
+ if (g_Zoom != state->zoomTarget) {
+ float dz = (state->zoomTarget - g_Zoom) * g_DT * 5;
if (dz && (fabsf(dz) < 0.03f)) {
if (dz > 0) {
dz = 0.03f;
dz = -0.03f;
}
}
- if (fabsf(g_Zoom - g_ZoomTarget) < fabsf(dz)) {
- g_Zoom = g_ZoomTarget;
+ if (fabsf(g_Zoom - state->zoomTarget) < fabsf(dz)) {
+ g_Zoom = state->zoomTarget;
} else {
g_Zoom += dz;
}
- readback->zoom = g_Zoom;
+ updateReadback();
}
// Set clear value to dim the background based on the zoom position.
- if (g_Zoom < 0.001f) {
+ if ((g_Zoom < 0.001f) && (state->zoomTarget < 0.001f)) {
pfClearColor(0.0f, 0.0f, 0.0f, 0.0f);
// When we're zoomed out and not tracking motion events, reset the pos to 0.
if (!g_LastTouchDown) {
g_PosPage = 0;
}
- return 1; // 0;
- } else if (g_Zoom < 0.99f) {
+ return lastFrame(0);
+ } else if (g_Zoom < 0.85f) {
pfClearColor(0.0f, 0.0f, 0.0f, g_Zoom);
} else {
- pfClearColor(0.0f, 0.0f, 0.0f, 0.99f);
+ pfClearColor(0.0f, 0.0f, 0.0f, g_Zoom);
}
// icons & labels
g_PageCount = count_pages(iconCount);
updatePos(0.1f);
- readback->posX = g_PosPage;
- readback->velocity = g_PosVelocity;
+ updateReadback();
- //debugF(" draw g_PosPage", g_PosPage);
+ debugF(" draw g_PosPage", g_PosPage);
// Draw the icons ========================================
}
+ {
+ float mat1[16];
+ matrixLoadIdentity(mat1);
+ vpLoadModelMatrix(mat1);
+ vpLoadTextureMatrix(mat1);
+ }
+
// Draw the home button ========================================
//draw_home_button();
--- /dev/null
+#pragma version(1)
+#pragma stateVertex(PV)
+#pragma stateFragment(PFTexLinear)
+#pragma stateStore(PSIcons)
+
+#define PI 3.14159f
+
+
+// Attraction to center values from page edge to page center.
+float g_AttractionTable[9];
+float g_FrictionTable[9];
+float g_PhysicsTableSize;
+
+float g_PosPage;
+float g_PosVelocity;
+float g_LastPositionX;
+int g_LastTouchDown;
+float g_DT;
+int g_LastTime;
+int g_PosMax;
+float g_Zoom;
+float g_OldPosPage;
+float g_OldPosVelocity;
+float g_OldZoom;
+
+// Drawing constants, should be parameters ======
+#define VIEW_ANGLE 1.28700222f
+
+int g_DrawLastFrame;
+int lastFrame(int draw) {
+ // We draw one extra frame to work around the last frame post bug.
+ // We also need to track if we drew the last frame to deal with large DT
+ // in the physics.
+ int ret = g_DrawLastFrame | draw;
+ g_DrawLastFrame = draw;
+ return ret; // should return draw instead.
+}
+
+void updateReadback() {
+ if ((g_OldPosPage != g_PosPage) ||
+ (g_OldPosVelocity != g_PosVelocity) ||
+ (g_OldZoom != g_Zoom)) {
+
+ g_OldPosPage = g_PosPage;
+ g_OldPosVelocity = g_PosVelocity;
+ g_OldZoom = g_Zoom;
+
+ int i[3];
+ i[0] = g_PosPage * (1 << 16);
+ i[1] = g_PosVelocity * (1 << 16);
+ i[2] = g_OldZoom * (1 << 16);
+ sendToClient(&i[0], 1, 12, 1);
+ }
+}
+
+
+void init() {
+ g_AttractionTable[0] = 6.5f;
+ g_AttractionTable[1] = 6.5f;
+ g_AttractionTable[2] = 7.0f;
+ g_AttractionTable[3] = 6.0f;
+ g_AttractionTable[4] = -6.0f;
+ g_AttractionTable[5] = -7.0f;
+ g_AttractionTable[6] = -6.5f;
+ g_AttractionTable[7] = -6.5f;
+ g_AttractionTable[8] = -6.5f; // dup 7 to avoid a clamp later
+ g_FrictionTable[0] = 3.5f;
+ g_FrictionTable[1] = 3.6f;
+ g_FrictionTable[2] = 4.0f;
+ g_FrictionTable[3] = 5.0f;
+ g_FrictionTable[4] = 5.0f;
+ g_FrictionTable[5] = 4.0f;
+ g_FrictionTable[6] = 3.6f;
+ g_FrictionTable[7] = 3.5f;
+ g_FrictionTable[8] = 3.5f; // dup 7 to avoid a clamp later
+ g_PhysicsTableSize = 7;
+
+ g_PosVelocity = 0;
+ g_PosPage = 0;
+ g_LastTouchDown = 0;
+ g_LastPositionX = 0;
+ g_Zoom = 0;
+}
+
+void move() {
+ if (g_LastTouchDown) {
+ float dx = -(state->newPositionX - g_LastPositionX);
+ g_PosVelocity = 0;
+ g_PosPage += dx * 4;
+
+ float pmin = -0.25f;
+ float pmax = g_PosMax + 0.25f;
+ g_PosPage = clampf(g_PosPage, pmin, pmax);
+ }
+ g_LastTouchDown = state->newTouchDown;
+ g_LastPositionX = state->newPositionX;
+ //debugF("Move P", g_PosPage);
+}
+
+void fling() {
+ g_LastTouchDown = 0;
+ g_PosVelocity = -state->flingVelocityX * 2;
+ float av = fabsf(g_PosVelocity);
+ float minVel = 3.5f;
+
+ minVel *= 1.f - (fabsf(fracf(g_PosPage + 0.5f) - 0.5f) * 0.45f);
+
+ if (av < minVel && av > 0.2f) {
+ if (g_PosVelocity > 0) {
+ g_PosVelocity = minVel;
+ } else {
+ g_PosVelocity = -minVel;
+ }
+ }
+
+ if (g_PosPage <= 0) {
+ g_PosVelocity = maxf(0, g_PosVelocity);
+ }
+ if (g_PosPage > g_PosMax) {
+ g_PosVelocity = minf(0, g_PosVelocity);
+ }
+}
+
+void touchUp() {
+ g_LastTouchDown = 0;
+}
+
+int
+count_pages(int iconCount)
+{
+ int iconsPerPage = COLUMNS_PER_PAGE * ROWS_PER_PAGE;
+ int pages = iconCount / iconsPerPage;
+ if (pages*iconsPerPage != iconCount) {
+ pages++;
+ }
+ return pages;
+}
+
+float
+modf(float x, float y)
+{
+ return x-(y*floorf(x/y));
+}
+
+void updatePos() {
+ if (g_LastTouchDown) {
+ return;
+ }
+
+ int outOfRange = 0;
+ float tablePosNorm = fracf(g_PosPage + 0.5f);
+ float tablePosF = tablePosNorm * g_PhysicsTableSize;
+ int tablePosI = tablePosF;
+ float tablePosFrac = tablePosF - tablePosI;
+ float accel = lerpf(g_AttractionTable[tablePosI],
+ g_AttractionTable[tablePosI + 1],
+ tablePosFrac) * g_DT;
+ float friction = lerpf(g_FrictionTable[tablePosI],
+ g_FrictionTable[tablePosI + 1],
+ tablePosFrac) * g_DT;
+
+ if (g_PosPage < -0.5f) {
+ accel = g_AttractionTable[0] * g_DT;
+ friction = g_FrictionTable[0] * g_DT;
+ outOfRange = 1;
+ }
+ if ((g_PosPage - g_PosMax) > 0.5f) {
+ accel = g_AttractionTable[(int)g_PhysicsTableSize] * g_DT;
+ friction = g_FrictionTable[(int)g_PhysicsTableSize] * g_DT;
+ outOfRange = 1;
+ }
+
+ // If our velocity is low OR acceleration is opposing it, apply it.
+ if (fabsf(g_PosVelocity) < 1.0f || (g_PosVelocity * accel) < 0) {
+ g_PosVelocity += accel;
+ }
+
+ if ((friction > fabsf(g_PosVelocity)) &&
+ (friction > fabsf(accel)) &&
+ !outOfRange) {
+ // Special get back to center and overcome friction physics.
+ float t = tablePosNorm - 0.5f;
+ if (fabsf(t) < (friction * g_DT)) {
+ // really close, just snap
+ g_PosPage = roundf(g_PosPage);
+ g_PosVelocity = 0;
+ } else {
+ if (t > 0) {
+ g_PosVelocity = -friction;
+ } else {
+ g_PosVelocity = friction;
+ }
+ }
+ } else {
+ // Normal physics
+ if (g_PosVelocity > 0) {
+ g_PosVelocity -= friction;
+ g_PosVelocity = maxf(g_PosVelocity, 0);
+ } else {
+ g_PosVelocity += friction;
+ g_PosVelocity = minf(g_PosVelocity, 0);
+ }
+ }
+ g_PosPage += g_PosVelocity * g_DT;
+
+ // Check for out of boundry conditions.
+ if (g_PosPage < 0 && g_PosVelocity < 0) {
+ g_PosPage = maxf(g_PosPage, -0.49);
+ float damp = 1.0 + (g_PosPage * 4);
+ damp = clampf(damp, 0.f, 0.9f);
+ g_PosVelocity *= damp;
+ }
+ if (g_PosPage > g_PosMax && g_PosVelocity > 0) {
+ g_PosPage = minf(g_PosPage, g_PosMax + 0.49);
+ float damp = 1.0 - ((g_PosPage - g_PosMax) * 4);
+ damp = clampf(damp, 0.f, 0.9f);
+ g_PosVelocity *= damp;
+ }
+}
+
+int positionStrip(float row, float column, int isTop)
+{
+ float mat1[16];
+
+ float x = 0.5f * (column - 1.5f);
+
+ float scale = 72.f * 3 / getWidth();
+ //float xscale = scale * 4.55 / 1.8f / 2;
+
+ if (isTop) {
+ matrixLoadTranslate(mat1, x, 0.8f, 0.f);
+ matrixScale(mat1, scale, scale, 1.f);
+ } else {
+ matrixLoadTranslate(mat1, x, -0.9f, 0.f);
+ matrixScale(mat1, scale, -scale, 1.f);
+ }
+ vpLoadModelMatrix(mat1);
+
+ float soff = row;
+ if (isTop) {
+ matrixLoadScale(mat1, 1.f, -0.85f, 1.f);
+ matrixTranslate(mat1, 0, -(row * 1.4) - 0.97, 0);
+ } else {
+ matrixLoadScale(mat1, 1.f, 0.85f, 1.f);
+ matrixTranslate(mat1, 0, -(row * 1.4) - 0.45, 0);
+ }
+ vpLoadTextureMatrix(mat1);
+
+ return 0;//- soff * 10.f;
+}
+
+void
+draw_home_button()
+{
+ color(1.0f, 1.0f, 1.0f, 1.0f);
+ bindTexture(NAMED_PFTexLinear, 0, params->homeButtonId);
+
+ float scale = 2.0f / SCREEN_WIDTH_PX;
+
+ float x = 0.0f;
+
+ float y = -(SCREEN_HEIGHT_PX / (float)SCREEN_WIDTH_PX);
+ y += g_Zoom * (scale * params->homeButtonTextureHeight / 2);
+
+ float z = 0.0f;
+ drawSprite(x, y, z, params->homeButtonTextureWidth, params->homeButtonTextureHeight);
+}
+
+void drawFrontGrid(float rowOffset)
+{
+ float h = getHeight();
+ float w = getWidth();
+
+ int intRowOffset = rowOffset;
+ float rowFrac = rowOffset - intRowOffset;
+ float colWidth = getWidth() / 4;
+ float rowHeight = colWidth + 25.f;
+ float yoff = h - ((h - (rowHeight * 4.f)) / 2);
+
+ yoff -= 110;
+
+ int row, col;
+ int iconNum = intRowOffset * 4;
+ float ymax = yoff;
+ float ymin = yoff - (3 * rowHeight) - 70;
+
+ for (row = 0; row < 5; row++) {
+ float y = yoff - ((-rowFrac + row) * rowHeight);
+
+ for (col=0; col < 4; col++) {
+ if (iconNum >= state->iconCount) {
+ return;
+ }
+
+ if (iconNum >= 0) {
+ float x = colWidth * col - ((128 - colWidth) / 2);
+
+ if ((y >= ymin) && (y <= ymax)) {
+ color(1.f, 1.f, 1.f, 1.f);
+ bindTexture(NAMED_PFTexLinear, 0, loadI32(ALLOC_ICON_IDS, iconNum));
+ drawSpriteScreenspace(x, y, 0, 128, 128);
+ }
+
+ float y2 = y - 44;
+ float a = 1.f;
+ if (y2 < ymin) {
+ a = 1.f - (ymin - y2) * 0.02f;
+ }
+ if (y > (ymax + 40)) {
+ a = 1.f - (y - (ymax + 40)) * 0.02f;
+ }
+ a = clampf(a, 0, 1);
+
+ color(1, 1, 1, a);
+ bindTexture(NAMED_PFTexLinear, 0, loadI32(ALLOC_LABEL_IDS, iconNum));
+ drawSpriteScreenspace(x, y - 44, 0,
+ params->bubbleBitmapWidth, params->bubbleBitmapHeight);
+ }
+ iconNum++;
+ }
+ }
+}
+
+void drawTop(float rowOffset)
+{
+ int intRowOffset = rowOffset;
+
+ int row, col;
+ int iconNum = 0;
+ for (row = 0; row < rowOffset; row++) {
+ for (col=0; col < 4; col++) {
+ if (iconNum >= state->iconCount) {
+ return;
+ }
+
+ int ps = positionStrip(rowOffset - row, col, 1);
+ bindTexture(NAMED_PFTexLinear, 0, loadI32(ALLOC_ICON_IDS, iconNum));
+ drawSimpleMesh(NAMED_SMMesh2);
+ iconNum++;
+ }
+ }
+}
+
+void drawBottom(float rowOffset)
+{
+ float pos = -1.f;
+ int intRowOffset = rowOffset;
+ pos -= rowOffset - intRowOffset;
+
+ int row, col;
+ int iconNum = (intRowOffset + 3) * 4;
+ while (1) {
+ for (col=0; col < 4; col++) {
+ if (iconNum >= state->iconCount) {
+ return;
+ }
+ if (pos > -1) {
+ int ps = positionStrip(pos, col, 0);
+ bindTexture(NAMED_PFTexLinear, 0, loadI32(ALLOC_ICON_IDS, iconNum));
+ drawSimpleMesh(NAMED_SMMesh2);
+ }
+ iconNum++;
+ }
+ pos += 1.f;
+ }
+}
+
+int
+main(int launchID)
+{
+ // Compute dt in seconds.
+ int newTime = uptimeMillis();
+ g_DT = (newTime - g_LastTime) / 1000.f;
+ g_LastTime = newTime;
+
+ if (!g_DrawLastFrame) {
+ // If we stopped rendering we cannot use DT.
+ // assume 30fps in this case.
+ g_DT = 0.033f;
+ }
+ if (g_DT > 0.2f) {
+ // physics may break if DT is large.
+ g_DT = 0.2f;
+ }
+
+ if (g_Zoom != state->zoomTarget) {
+ float dz = (state->zoomTarget - g_Zoom) * g_DT * 5;
+ if (dz && (fabsf(dz) < 0.03f)) {
+ if (dz > 0) {
+ dz = 0.03f;
+ } else {
+ dz = -0.03f;
+ }
+ }
+ if (fabsf(g_Zoom - state->zoomTarget) < fabsf(dz)) {
+ g_Zoom = state->zoomTarget;
+ } else {
+ g_Zoom += dz;
+ }
+ updateReadback();
+ }
+
+ // Set clear value to dim the background based on the zoom position.
+ if ((g_Zoom < 0.001f) && (state->zoomTarget < 0.001f)) {
+ pfClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+ // When we're zoomed out and not tracking motion events, reset the pos to 0.
+ if (!g_LastTouchDown) {
+ g_PosPage = 0;
+ }
+ return lastFrame(0);
+ } else if (g_Zoom < 0.85f) {
+ pfClearColor(0.0f, 0.0f, 0.0f, g_Zoom);
+ } else {
+ pfClearColor(0.0f, 0.0f, 0.0f, g_Zoom);
+ }
+
+ // icons & labels
+ int iconCount = state->iconCount;
+ g_PosMax = ((iconCount + 3) / 4) - 4;
+ if (g_PosMax < 0) g_PosMax = 0;
+
+ updatePos(0.1f);
+ updateReadback();
+
+ //debugF(" draw g_PosPage", g_PosPage);
+
+ // Draw the icons ========================================
+
+ //bindProgramFragment(NAMED_PFColor);
+ //positionStrip(1, 0, 0);
+ //drawSimpleMesh(NAMED_SMMesh2);
+ //positionStrip(1, 1);
+ //drawSimpleMesh(NAMED_SMMesh2);
+ //positionStrip(1, 2);
+ //drawSimpleMesh(NAMED_SMMesh2);
+ //positionStrip(1, 3);
+ //drawSimpleMesh(NAMED_SMMesh2);
+
+ bindProgramFragment(NAMED_PFTexLinear);
+
+
+ int lastIcon = iconCount-1;
+
+ int page = g_PosPage;
+ float currentPagePosition = g_PosPage - page;
+
+ int iconsPerPage = COLUMNS_PER_PAGE * ROWS_PER_PAGE;
+ float scale = (1 / g_Zoom);
+
+ float pageAngle = VIEW_ANGLE * 1.2f;
+
+ float zoomOffset = 40 * (1 - g_Zoom);
+
+ drawTop(g_PosPage);
+ drawBottom(g_PosPage);
+ drawFrontGrid(g_PosPage);
+
+ {
+ float mat1[16];
+ matrixLoadIdentity(mat1);
+ vpLoadModelMatrix(mat1);
+ vpLoadTextureMatrix(mat1);
+ }
+
+ if (0) {
+ float h = getHeight();
+
+ color(1, 1, 1, 1);
+ bindProgramFragment(NAMED_PFColor);
+ bindProgramVertex(NAMED_PVOrtho);
+ float dy = 145.f;
+ float y = h - ((h - (dy * 4.f)) / 2);
+
+ drawLine(0, y, 0, 480, y, 0);
+ y -= dy;
+ drawLine(0, y, 0, 480, y, 0);
+ y -= dy;
+ drawLine(0, y, 0, 480, y, 0);
+ y -= dy;
+ drawLine(0, y, 0, 480, y, 0);
+ y -= dy;
+ drawLine(0, y, 0, 480, y, 0);
+ }
+
+
+ // Draw the home button ========================================
+ //draw_home_button();
+
+ // Bug workaround where the last frame is not always displayed
+ // So we keep rendering until the bug is fixed.
+ return lastFrame((g_PosVelocity != 0) || fracf(g_PosPage) || g_Zoom != state->zoomTarget);
+}
+
--- /dev/null
+#pragma version(1)
+#pragma stateVertex(PV)
+#pragma stateFragment(PFTexLinear)
+#pragma stateStore(PSIcons)
+
+#define PI 3.14159f
+
+
+// Attraction to center values from page edge to page center.
+float g_AttractionTable[9];
+float g_FrictionTable[9];
+float g_PhysicsTableSize;
+
+float g_PosPage;
+float g_PosVelocity;
+float g_LastPositionX;
+int g_LastTouchDown;
+float g_DT;
+int g_LastTime;
+int g_PageCount;
+float g_Zoom;
+
+// Drawing constants, should be parameters ======
+#define VIEW_ANGLE 1.28700222f
+
+float g_OldPosPage;
+float g_OldPosVelocity;
+float g_OldZoom;
+
+int g_DrawLastFrame;
+int lastFrame(int draw) {
+ // We draw one extra frame to work around the last frame post bug.
+ // We also need to track if we drew the last frame to deal with large DT
+ // in the physics.
+ int ret = g_DrawLastFrame | draw;
+ g_DrawLastFrame = draw;
+ return ret; // should return draw instead.
+}
+
+void updateReadback() {
+ if ((g_OldPosPage != g_PosPage) ||
+ (g_OldPosVelocity != g_PosVelocity) ||
+ (g_OldZoom != g_Zoom)) {
+
+ g_OldPosPage = g_PosPage;
+ g_OldPosVelocity = g_PosVelocity;
+ g_OldZoom = g_Zoom;
+
+ int i[3];
+ i[0] = g_PosPage * (1 << 16);
+ i[1] = g_PosVelocity * (1 << 16);
+ i[2] = g_OldZoom * (1 << 16);
+ sendToClient(&i[0], 1, 12, 1);
+ }
+}
+
+void init() {
+ g_AttractionTable[0] = 6.5f;
+ g_AttractionTable[1] = 6.5f;
+ g_AttractionTable[2] = 7.0f;
+ g_AttractionTable[3] = 6.0f;
+ g_AttractionTable[4] = -6.0f;
+ g_AttractionTable[5] = -7.0f;
+ g_AttractionTable[6] = -6.5f;
+ g_AttractionTable[7] = -6.5f;
+ g_AttractionTable[8] = -6.5f; // dup 7 to avoid a clamp later
+ g_FrictionTable[0] = 3.5f;
+ g_FrictionTable[1] = 3.6f;
+ g_FrictionTable[2] = 4.0f;
+ g_FrictionTable[3] = 5.0f;
+ g_FrictionTable[4] = 5.0f;
+ g_FrictionTable[5] = 4.0f;
+ g_FrictionTable[6] = 3.6f;
+ g_FrictionTable[7] = 3.5f;
+ g_FrictionTable[8] = 3.5f; // dup 7 to avoid a clamp later
+ g_PhysicsTableSize = 7;
+
+ g_PosVelocity = 0;
+ g_PosPage = 0;
+ g_LastTouchDown = 0;
+ g_LastPositionX = 0;
+ g_Zoom = 0;
+}
+
+void move() {
+ if (g_LastTouchDown) {
+ float dx = -(state->newPositionX - g_LastPositionX);
+ g_PosVelocity = 0;
+ g_PosPage += dx;
+
+ float pmin = -0.25f;
+ float pmax = (g_PageCount - 1) + 0.25f;
+ g_PosPage = clampf(g_PosPage, pmin, pmax);
+ }
+ g_LastTouchDown = state->newTouchDown;
+ g_LastPositionX = state->newPositionX;
+ //debugF("Move P", g_PosPage);
+}
+
+void fling() {
+ g_LastTouchDown = 0;
+ g_PosVelocity = -state->flingVelocityX;
+ float av = fabsf(g_PosVelocity);
+ float minVel = 3.5f;
+
+ minVel *= 1.f - (fabsf(fracf(g_PosPage + 0.5f) - 0.5f) * 0.45f);
+
+ if (av < minVel && av > 0.2f) {
+ if (g_PosVelocity > 0) {
+ g_PosVelocity = minVel;
+ } else {
+ g_PosVelocity = -minVel;
+ }
+ }
+
+ if (g_PosPage <= 0) {
+ g_PosVelocity = maxf(0, g_PosVelocity);
+ }
+ if (g_PosPage > (g_PageCount - 1)) {
+ g_PosVelocity = minf(0, g_PosVelocity);
+ }
+ //debugF("fling v", g_PosVelocity);
+}
+
+void touchUp() {
+ g_LastTouchDown = 0;
+}
+
+int
+count_pages(int iconCount)
+{
+ int iconsPerPage = COLUMNS_PER_PAGE * ROWS_PER_PAGE;
+ int pages = iconCount / iconsPerPage;
+ if (pages*iconsPerPage != iconCount) {
+ pages++;
+ }
+ return pages;
+}
+
+float
+modf(float x, float y)
+{
+ return x-(y*floorf(x/y));
+}
+
+void updatePos() {
+ if (g_LastTouchDown) {
+ return;
+ }
+
+ float tablePosNorm = fracf(g_PosPage + 0.5f);
+ float tablePosF = tablePosNorm * g_PhysicsTableSize;
+ int tablePosI = tablePosF;
+ float tablePosFrac = tablePosF - tablePosI;
+ float accel = lerpf(g_AttractionTable[tablePosI],
+ g_AttractionTable[tablePosI + 1],
+ tablePosFrac) * g_DT;
+ float friction = lerpf(g_FrictionTable[tablePosI],
+ g_FrictionTable[tablePosI + 1],
+ tablePosFrac) * g_DT;
+ //debugF(" accel", accel);
+ //debugF(" friction", friction);
+
+ // If our velocity is low OR acceleration is opposing it, apply it.
+ if (fabsf(g_PosVelocity) < 1.0f || (g_PosVelocity * accel) < 0) {
+ g_PosVelocity += accel;
+ }
+
+ if ((friction > fabsf(g_PosVelocity)) && (friction > fabsf(accel))) {
+ // Special get back to center and overcome friction physics.
+ float t = tablePosNorm - 0.5f;
+ if (fabsf(t) < (friction * g_DT)) {
+ // really close, just snap
+ g_PosPage = roundf(g_PosPage);
+ g_PosVelocity = 0;
+ } else {
+ if (t > 0) {
+ g_PosVelocity = -friction;
+ } else {
+ g_PosVelocity = friction;
+ }
+ }
+ } else {
+ // Normal physics
+ if (g_PosVelocity > 0) {
+ g_PosVelocity -= friction;
+ g_PosVelocity = maxf(g_PosVelocity, 0);
+ } else {
+ g_PosVelocity += friction;
+ g_PosVelocity = minf(g_PosVelocity, 0);
+ }
+ }
+ g_PosPage += g_PosVelocity * g_DT;
+
+ // Check for out of boundry conditions.
+ if (g_PosPage < 0 && g_PosVelocity < 0) {
+ float damp = 1.0 + (g_PosPage * 4);
+ damp = clampf(damp, 0.f, 0.9f);
+ g_PosVelocity *= damp;
+ }
+ if (g_PosPage > (g_PageCount-1) && g_PosVelocity > 0) {
+ float damp = 1.0 - ((g_PosPage - g_PageCount + 1) * 4);
+ damp = clampf(damp, 0.f, 0.9f);
+ g_PosVelocity *= damp;
+ }
+}
+
+float
+far_size(float sizeAt0)
+{
+ return sizeAt0 * (RADIUS+2) / 2; // -2 is the camera z=(z-camZ)/z
+}
+
+void
+draw_page(int icon, int lastIcon, float centerAngle, float scale)
+{
+ int row;
+ int col;
+
+ //debugF("center angle", centerAngle);
+
+ float iconTextureWidth = ICON_WIDTH_PX / (float)ICON_TEXTURE_WIDTH_PX;
+ float iconTextureHeight = ICON_HEIGHT_PX / (float)ICON_TEXTURE_HEIGHT_PX;
+
+ float iconWidthAngle = VIEW_ANGLE * ICON_WIDTH_PX / SCREEN_WIDTH_PX;
+ float columnGutterAngle = iconWidthAngle * 0.9f;
+
+ float farIconSize = FAR_ICON_SIZE;
+ float iconGutterHeight = farIconSize * 1.3f;
+
+ float farIconTextureSize = far_size(2 * ICON_TEXTURE_WIDTH_PX / (float)SCREEN_WIDTH_PX);
+
+ float normalizedLabelWidth = 2 * params->bubbleWidth / (float)SCREEN_WIDTH_PX;
+ float farLabelHeight = far_size(params->bubbleHeight * (normalizedLabelWidth / params->bubbleWidth));
+
+ for (row=0; row<ROWS_PER_PAGE && icon<=lastIcon; row++) {
+ float angle = centerAngle;
+ angle -= (columnGutterAngle + iconWidthAngle) * 1.5f;
+
+ float iconTop = (farIconSize + iconGutterHeight) * (1.85f + ICON_TOP_OFFSET)
+ - row * (farIconSize + iconGutterHeight);
+ float iconBottom = iconTop - farIconSize;
+
+ float labelY = iconBottom - farLabelHeight;
+ float iconTextureTop = iconTop + (0.5f * (farIconTextureSize - farIconSize));
+ float iconTextureBottom = iconTextureTop - farIconTextureSize;
+
+ for (col=0; col<COLUMNS_PER_PAGE && icon<=lastIcon; col++) {
+ // icon
+ float sine = sinf(angle);
+ float cosine = cosf(angle);
+
+ float centerX = sine * RADIUS;
+ float centerZ = cosine * RADIUS / scale;
+
+ if (scale > 1.f) {
+ centerX *= scale;
+ }
+
+ float iconLeftX = centerX - (cosine * farIconTextureSize * .5);
+ float iconRightX = centerX + (cosine * farIconTextureSize * .5);
+ float iconLeftZ = centerZ + (sine * farIconTextureSize * .5);
+ float iconRightZ = centerZ - (sine * farIconTextureSize * .5);
+
+ color(1.0f, 1.0f, 1.0f, 0.99f);
+ if (state->selectedIconIndex == icon) {
+ bindTexture(NAMED_PFTexLinear, 0, state->selectedIconTexture);
+ drawQuadTexCoords(
+ iconLeftX, iconTextureTop, iconLeftZ, 0.0f, 0.0f,
+ iconRightX, iconTextureTop, iconRightZ, 1.0f, 0.0f,
+ iconRightX, iconTextureBottom, iconRightZ, 1.0f, 1.0f,
+ iconLeftX, iconTextureBottom, iconLeftZ, 0.0f, 1.0f);
+ } else {
+ bindTexture(NAMED_PFTexLinear, 0, loadI32(ALLOC_ICON_IDS, icon));
+ drawQuadTexCoords(
+ iconLeftX, iconTextureTop, iconLeftZ, 0.0f, 0.0f,
+ iconRightX, iconTextureTop, iconRightZ, 1.0f, 0.0f,
+ iconRightX, iconTextureBottom, iconRightZ, 1.0f, 1.0f,
+ iconLeftX, iconTextureBottom, iconLeftZ, 0.0f, 1.0f);
+ }
+
+ // label
+ if (scale < 1.2f) {
+ float a = (1.2f - maxf(scale, 1.0f)) * 5;
+ color(1.0f, 1.0f, 1.0f, a);
+ bindTexture(NAMED_PFTexLinear, 0, loadI32(ALLOC_LABEL_IDS, icon));
+ drawSprite(centerX, labelY, centerZ,
+ params->bubbleBitmapWidth, params->bubbleBitmapHeight);
+ }
+
+ angle += columnGutterAngle + iconWidthAngle;
+ icon++;
+ }
+ }
+}
+
+void
+draw_home_button()
+{
+ color(1.0f, 1.0f, 1.0f, 1.0f);
+ bindTexture(NAMED_PFTexLinear, 0, params->homeButtonId);
+
+ float scale = 2.0f / SCREEN_WIDTH_PX;
+
+ float x = 0.0f;
+
+ float y = -(SCREEN_HEIGHT_PX / (float)SCREEN_WIDTH_PX);
+ y += g_Zoom * (scale * params->homeButtonTextureHeight / 2);
+
+ float z = 0.0f;
+ drawSprite(x, y, z, params->homeButtonTextureWidth, params->homeButtonTextureHeight);
+}
+
+int
+main(int launchID)
+{
+ // Compute dt in seconds.
+ int newTime = uptimeMillis();
+ g_DT = (newTime - g_LastTime) / 1000.f;
+ g_LastTime = newTime;
+
+ if (!g_DrawLastFrame) {
+ // If we stopped rendering we cannot use DT.
+ // assume 30fps in this case.
+ g_DT = 0.033f;
+ }
+ if (g_DT > 0.2f) {
+ // physics may break if DT is large.
+ g_DT = 0.2f;
+ }
+
+ //debugF("zoom", g_Zoom);
+ if (g_Zoom != state->zoomTarget) {
+ float dz = (state->zoomTarget - g_Zoom) * g_DT * 5;
+ if (dz && (fabsf(dz) < 0.03f)) {
+ if (dz > 0) {
+ dz = 0.03f;
+ } else {
+ dz = -0.03f;
+ }
+ }
+ if (fabsf(g_Zoom - state->zoomTarget) < fabsf(dz)) {
+ g_Zoom = state->zoomTarget;
+ } else {
+ g_Zoom += dz;
+ }
+ updateReadback();
+ }
+
+ // Set clear value to dim the background based on the zoom position.
+ if ((g_Zoom < 0.001f) && (state->zoomTarget < 0.001f)) {
+ pfClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+ // When we're zoomed out and not tracking motion events, reset the pos to 0.
+ if (!g_LastTouchDown) {
+ g_PosPage = 0;
+ }
+ return lastFrame(0);
+ } else if (g_Zoom < 0.85f) {
+ pfClearColor(0.0f, 0.0f, 0.0f, g_Zoom);
+ } else {
+ pfClearColor(0.0f, 0.0f, 0.0f, g_Zoom);
+ }
+
+ // icons & labels
+ int iconCount = state->iconCount;
+ g_PageCount = count_pages(iconCount);
+
+ updatePos(0.1f);
+ updateReadback();
+
+ //debugF(" draw g_PosPage", g_PosPage);
+
+ // Draw the icons ========================================
+
+ // Bug makes 1.0f alpha fail.
+ color(1.0f, 1.0f, 1.0f, 0.99f);
+
+ if (iconCount <= 0) {
+ return lastFrame(0);
+ }
+ int lastIcon = iconCount-1;
+
+ int page = g_PosPage;
+ float currentPagePosition = g_PosPage - page;
+
+ int iconsPerPage = COLUMNS_PER_PAGE * ROWS_PER_PAGE;
+ int icon = clamp(iconsPerPage * page, 0, lastIcon);
+
+ float scale = (1 / g_Zoom);
+
+ float pageAngle = VIEW_ANGLE * 1.2f;
+ draw_page(icon, lastIcon, -pageAngle*currentPagePosition, scale);
+ draw_page(icon+iconsPerPage, lastIcon, (-pageAngle*currentPagePosition)+pageAngle, scale);
+
+ // Draw the border lines for debugging ========================================
+ /*
+ bindProgramVertex(NAMED_PVOrtho);
+ bindProgramFragment(NAMED_PFOrtho);
+ bindProgramFragmentStore(NAMED_PFSText);
+
+ color(1.0f, 1.0f, 0.0f, 0.99f);
+ int i;
+ for (i=0; i<ROWS_PER_PAGE+1; i++) {
+ int y = loadI32(ALLOC_Y_BORDERS, i);
+ drawRect(0, y, SCREEN_WIDTH_PX, y+1, 0.0f);
+ }
+ for (i=0; i<COLUMNS_PER_PAGE+1; i++) {
+ int x = loadI32(ALLOC_X_BORDERS, i);
+ drawRect(x, 0, x+1, SCREEN_HEIGHT_PX, 0.0f);
+ }
+ */
+
+ // Draw the home button ========================================
+ draw_home_button();
+
+ /*
+ bindTexture(NAMED_PFOrtho, 0, loadI32(ALLOC_PARAMS, PARAM_SCROLL_HANDLE_ID));
+ float handleLeft = 40 + (320 * (scrollXPx/(float)(maxScrollXPx)));
+ float handleTop = 680;
+ float handleWidth = loadI32(ALLOC_PARAMS, PARAM_SCROLL_HANDLE_TEX_WIDTH);
+ float handleHeight = loadI32(ALLOC_PARAMS, PARAM_SCROLL_HANDLE_TEX_HEIGHT);
+ drawRect(handleLeft, handleTop, handleLeft+handleWidth, handleTop+handleHeight, 0.0f);
+ */
+
+ // Bug workaround where the last frame is not always displayed
+ // So we keep rendering until the bug is fixed.
+ return lastFrame((g_PosVelocity != 0) || fracf(g_PosPage) || (g_Zoom != state->zoomTarget));
+}
+
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