src/com/android/wallpaper/nexus/nexus.rs - platform/packages/wallpapers/Basic - Git at Google

 // Copyright (C) 2009 The Android Open Source Project
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //      http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.

 #pragma version(1)

 #pragma rs java_package_name(com.android.wallpaper.nexus)

 #include "rs_graphics.rsh"
 #pragma stateVertex(parent)

 #define MAX_PULSES           20
 #define MAX_EXTRAS           40
 #define PULSE_SIZE           14 // Size in pixels of a cell
 #define HALF_PULSE_SIZE      7
 #define GLOW_SIZE            64 // Size of the leading glow in pixels
 #define HALF_GLOW_SIZE       32
 #define SPEED                0.2f // (200 / 1000) Pixels per ms
 #define SPEED_DELTA_MIN      0.7f
 #define SPEED_DELTA_MAX      1.7f
 #define PULSE_NORMAL         0
 #define PULSE_EXTRA          1
 #define TRAIL_SIZE           40 // Number of cells in a trail
 #define MAX_DELAY          2000 // Delay between a pulse going offscreen and restarting

 typedef struct pulse_s {
     int pulseType;
     float originX;
     float originY;
     int color;
     int startTime;
     float dx;
     float dy;
     float scale;
     int active;
 } pulse_t;

 static pulse_t gPulses[MAX_PULSES];
 static pulse_t gExtras[MAX_EXTRAS];
 static int gNow;
 static int gWidth;
 static int gHeight;
 static int gRotate;

 float gXOffset;
 int gIsPreview;
 int gMode;

 rs_program_fragment gPFTexture;
 rs_program_store gPSBlend;
 rs_program_fragment gPFTexture565;

 rs_allocation gTBackground;
 rs_allocation gTPulse;
 rs_allocation gTGlow;

 static void setColor(int c) {
     if (gMode == 1) {
         // sholes red
         rsgProgramFragmentConstantColor(gPFTexture, 0.9f, 0.1f, 0.1f, 0.8f);
     } else if (c == 0) {
         // red
         rsgProgramFragmentConstantColor(gPFTexture, 1.0f, 0.0f, 0.0f, 0.8f);
     } else if (c == 1) {
         // green
         rsgProgramFragmentConstantColor(gPFTexture, 0.0f, 0.8f, 0.0f, 0.8f);
     } else if (c == 2) {
         // blue
         rsgProgramFragmentConstantColor(gPFTexture, 0.0f, 0.4f, 0.9f, 0.8f);
     } else if (c == 3) {
         // yellow
         rsgProgramFragmentConstantColor(gPFTexture, 1.0f, 0.8f, 0.0f, 0.8f);
     }
 }

 static void initPulse(struct pulse_s * pulse, int pulseType) {
     float scale = rsRand(SPEED_DELTA_MIN, SPEED_DELTA_MAX);
     pulse->scale = scale;
     gWidth = rsgGetWidth();
     gHeight = rsgGetHeight();
     if (rsRand(1.f) > 0.5f) {
         pulse->originX = rsRand(gWidth * 2 / PULSE_SIZE) * PULSE_SIZE;
         pulse->dx = 0;
         if (rsRand(1.f) > 0.5f) {
             // Top
             pulse->originY = 0;
             pulse->dy = scale;
         } else {
             // Bottom
             pulse->originY = gHeight / scale;
             pulse->dy = -scale;
         }
     } else {
         pulse->originY = rsRand(gHeight / PULSE_SIZE) * PULSE_SIZE;
         pulse->dy = 0;
         if (rsRand(1.f) > 0.5f) {
             // Left
             pulse->originX = 0;
             pulse->dx = scale;
         } else {
             // Right
             pulse->originX = gWidth * 2 / scale;
             pulse->dx = -scale;
         }
     }
     pulse->startTime = gNow + rsRand(MAX_DELAY);

     pulse->color = rsRand(4);

     pulse->pulseType = pulseType;
     if (pulseType == PULSE_EXTRA) {
         pulse->active = 0;
     } else {
         pulse->active = 1;
     }
 }

 void initPulses() {
     gNow = (int)rsUptimeMillis();
     int i;
     for (i=0; i<MAX_PULSES; i++) {
         initPulse(&gPulses[i], PULSE_NORMAL);
     }
     for (i=0; i<MAX_EXTRAS; i++) {
         struct pulse_s * p = &gExtras[i];
         p->pulseType = PULSE_EXTRA;
         p->active = 0;
     }
 }

 static void drawBackground() {
     rsgBindProgramFragment(gPFTexture565);
     rsgBindTexture(gPFTexture565, 0, gTBackground);
     if (gRotate) {
         rsgDrawRect(0.0f, 0.0f, gHeight*2, gWidth, 0.0f);
     } else {
         rsgDrawRect(0.0f, 0.0f, gWidth*2, gHeight, 0.0f);
     }
 }

 static void drawPulses(pulse_t * pulseSet, int setSize) {
     rsgBindProgramFragment(gPFTexture);
     rsgBindProgramStore(gPSBlend);

     rs_matrix4x4 matrix;
     rs_matrix4x4 modelMatrix;
     for (int i=0; i<setSize; i++) {
         struct pulse_s * p = &pulseSet[i];
         int delta = gNow - p->startTime;

         if (p->active != 0 && delta >= 0) {

             rsMatrixLoadIdentity(&modelMatrix);
             if (gRotate) {
                 //matrixLoadRotate(modelMatrix, 90.0f, 0.0f, 0.0f, 1.0f);
                 //matrixTranslate(modelMatrix, 0.0f, -height, 1.0f);
                 // XXX: HAX: do not slide display in landscape
             } else {
                  rsMatrixTranslate(&modelMatrix, -(gXOffset * gWidth), 0, 0);
             }
             rsMatrixScale(&modelMatrix, p->scale, p->scale, 1.0f);
             rsgProgramVertexLoadModelMatrix(&modelMatrix);

            float x = p->originX + (p->dx * SPEED * delta);
            float y = p->originY + (p->dy * SPEED * delta);

            rsMatrixLoadIdentity(&matrix);
            if (p->dx < 0) {
                rsgProgramVertexLoadTextureMatrix(&matrix);
                float xx = x + (TRAIL_SIZE * PULSE_SIZE);
                if (xx <= 0) {
                    initPulse(p, p->pulseType);
                } else {
                    setColor(p->color);
                    rsgBindTexture(gPFTexture, 0, gTPulse);
                    rsgDrawRect(x, y, xx, y + PULSE_SIZE, 0.0f);
                    rsgBindTexture(gPFTexture, 0, gTGlow);
                    rsgDrawRect(x + HALF_PULSE_SIZE - HALF_GLOW_SIZE,
                        y + HALF_PULSE_SIZE - HALF_GLOW_SIZE,
                        x + HALF_PULSE_SIZE + HALF_GLOW_SIZE,
                        y + HALF_PULSE_SIZE + HALF_GLOW_SIZE,
                        0.0f);
                }
            } else if (p->dx > 0) {
                x += PULSE_SIZE; // need to start on the other side of this cell
                rsMatrixRotate(&matrix, 180.0f, 0.0f, 0.0f, 1.0f);
                rsgProgramVertexLoadTextureMatrix(&matrix);
                float xx = x - (TRAIL_SIZE * PULSE_SIZE);
               if (xx >= gWidth * 2) {
                   initPulse(p, p->pulseType);
                } else {
                    setColor(p->color);
                    rsgBindTexture(gPFTexture, 0, gTPulse);
                    rsgDrawRect(xx, y, x, y + PULSE_SIZE, 0.0f);
                    rsgBindTexture(gPFTexture, 0, gTGlow);
                    rsgDrawRect(x - HALF_PULSE_SIZE - HALF_GLOW_SIZE,
                        y + HALF_PULSE_SIZE - HALF_GLOW_SIZE,
                        x - HALF_PULSE_SIZE + HALF_GLOW_SIZE,
                        y + HALF_PULSE_SIZE + HALF_GLOW_SIZE,
                        0.0f);
                }
            } else if (p->dy < 0) {
                rsMatrixRotate(&matrix, -90.0f, 0.0f, 0.0f, 1.0f);
                rsgProgramVertexLoadTextureMatrix(&matrix);
                float yy = y + (TRAIL_SIZE * PULSE_SIZE);
                if (yy <= 0) {
                   initPulse(p, p->pulseType);
                } else {
                    setColor(p->color);
                    rsgBindTexture(gPFTexture, 0, gTPulse);
                    rsgDrawRect(x, y, x + PULSE_SIZE, yy, 0.0f);
                    rsgBindTexture(gPFTexture, 0, gTGlow);
                    rsgDrawRect(x + HALF_PULSE_SIZE - HALF_GLOW_SIZE,
                        y + HALF_PULSE_SIZE - HALF_GLOW_SIZE,
                        x + HALF_PULSE_SIZE + HALF_GLOW_SIZE,
                        y + HALF_PULSE_SIZE + HALF_GLOW_SIZE,
                        0.0f);
                }
            } else if (p->dy > 0) {
             y += PULSE_SIZE; // need to start on the other side of this cell
                rsMatrixRotate(&matrix, 90.0f, 0.0f, 0.0f, 1.0f);
                rsgProgramVertexLoadTextureMatrix(&matrix);
                float yy = y - (TRAIL_SIZE * PULSE_SIZE);
                if (yy >= gHeight) {
                   initPulse(p, p->pulseType);
                } else {
                    setColor(p->color);
                    rsgBindTexture(gPFTexture, 0, gTPulse);
                    rsgDrawRect(x, yy, x + PULSE_SIZE, y, 0.0f);
                    rsgBindTexture(gPFTexture, 0, gTGlow);
                    rsgDrawRect(x + HALF_PULSE_SIZE - HALF_GLOW_SIZE,
                        y - HALF_PULSE_SIZE - HALF_GLOW_SIZE,
                        x + HALF_PULSE_SIZE + HALF_GLOW_SIZE,
                        y - HALF_PULSE_SIZE + HALF_GLOW_SIZE,
                        0.0f);
                }
            }
        }
     }

     rsMatrixLoadIdentity(&matrix);
     rsgProgramVertexLoadTextureMatrix(&matrix);
 }

 void addTap(int x, int y) {
     int count = 0;
     int color = rsRand(4);
     float scale = rsRand(0.9f, 1.9f);
     x = (x / PULSE_SIZE) * PULSE_SIZE;
     y = (y / PULSE_SIZE) * PULSE_SIZE;
     for (int i=0; i<MAX_EXTRAS; i++) {
         struct pulse_s * p = &gExtras[i];
         if (p->active == 0) {
             p->originX = x/scale;
             p->originY = y/scale;
             p->scale = scale;

             if (count == 0) {
                 p->dx = scale;
                 p->dy = 0.0f;
             } else if (count == 1) {
                 p->dx = -scale;
                 p->dy = 0.0f;
             } else if (count == 2) {
                 p->dx = 0.0f;
                 p->dy = scale;
             } else if (count == 3) {
                 p->dx = 0.0f;
                 p->dy = -scale;
             }

             p->active = 1;
             p->color = color;
             color++;
             if (color >= 4) {
                 color = 0;
             }
             p->startTime = gNow;
             count++;
             if (count == 4) {
                 break;
             }
         }
     }
 }

 int root() {
     rsgClearColor(0.f, 0.f, 0.f, 1.f);

     gWidth = rsgGetWidth();
     gHeight = rsgGetHeight();
     gRotate = gWidth > gHeight ? 1 : 0;

     gNow = (int)rsUptimeMillis();

     rs_matrix4x4 matrix;
     rsMatrixLoadIdentity(&matrix);

     if (gRotate) {
         //matrixLoadRotate(matrix, 90.0f, 0.0f, 0.0f, 1.0f);
         //matrixTranslate(matrix, 0.0f, -height, 1.0f);
         // XXX: HAX: do not slide display in landscape
     } else {
          rsMatrixTranslate(&matrix, -(gXOffset * gWidth), 0, 0);
     }

     rsgProgramVertexLoadModelMatrix(&matrix);

     drawBackground();
     drawPulses(gPulses, MAX_PULSES);
     drawPulses(gExtras, MAX_EXTRAS);

     return 45;
 }
	// Copyright (C) 2009 The Android Open Source Project
	//
	// Licensed under the Apache License, Version 2.0 (the "License");
	// you may not use this file except in compliance with the License.
	// You may obtain a copy of the License at
	//
	// http://www.apache.org/licenses/LICENSE-2.0
	//
	// Unless required by applicable law or agreed to in writing, software
	// distributed under the License is distributed on an "AS IS" BASIS,
	// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	// See the License for the specific language governing permissions and
	// limitations under the License.

	#pragma version(1)

	#pragma rs java_package_name(com.android.wallpaper.nexus)

	#include "rs_graphics.rsh"
	#pragma stateVertex(parent)

	#define MAX_PULSES 20
	#define MAX_EXTRAS 40
	#define PULSE_SIZE 14 // Size in pixels of a cell
	#define HALF_PULSE_SIZE 7
	#define GLOW_SIZE 64 // Size of the leading glow in pixels
	#define HALF_GLOW_SIZE 32
	#define SPEED 0.2f // (200 / 1000) Pixels per ms
	#define SPEED_DELTA_MIN 0.7f
	#define SPEED_DELTA_MAX 1.7f
	#define PULSE_NORMAL 0
	#define PULSE_EXTRA 1
	#define TRAIL_SIZE 40 // Number of cells in a trail
	#define MAX_DELAY 2000 // Delay between a pulse going offscreen and restarting

	typedef struct pulse_s {
	int pulseType;
	float originX;
	float originY;
	int color;
	int startTime;
	float dx;
	float dy;
	float scale;
	int active;
	} pulse_t;

	static pulse_t gPulses[MAX_PULSES];
	static pulse_t gExtras[MAX_EXTRAS];
	static int gNow;
	static int gWidth;
	static int gHeight;
	static int gRotate;

	float gXOffset;
	int gIsPreview;
	int gMode;

	rs_program_fragment gPFTexture;
	rs_program_store gPSBlend;
	rs_program_fragment gPFTexture565;

	rs_allocation gTBackground;
	rs_allocation gTPulse;
	rs_allocation gTGlow;

	static void setColor(int c) {
	if (gMode == 1) {
	// sholes red
	rsgProgramFragmentConstantColor(gPFTexture, 0.9f, 0.1f, 0.1f, 0.8f);
	} else if (c == 0) {
	// red
	rsgProgramFragmentConstantColor(gPFTexture, 1.0f, 0.0f, 0.0f, 0.8f);
	} else if (c == 1) {
	// green
	rsgProgramFragmentConstantColor(gPFTexture, 0.0f, 0.8f, 0.0f, 0.8f);
	} else if (c == 2) {
	// blue
	rsgProgramFragmentConstantColor(gPFTexture, 0.0f, 0.4f, 0.9f, 0.8f);
	} else if (c == 3) {
	// yellow
	rsgProgramFragmentConstantColor(gPFTexture, 1.0f, 0.8f, 0.0f, 0.8f);
	}
	}

	static void initPulse(struct pulse_s * pulse, int pulseType) {
	float scale = rsRand(SPEED_DELTA_MIN, SPEED_DELTA_MAX);
	pulse->scale = scale;
	gWidth = rsgGetWidth();
	gHeight = rsgGetHeight();
	if (rsRand(1.f) > 0.5f) {
	pulse->originX = rsRand(gWidth * 2 / PULSE_SIZE) * PULSE_SIZE;
	pulse->dx = 0;
	if (rsRand(1.f) > 0.5f) {
	// Top
	pulse->originY = 0;
	pulse->dy = scale;
	} else {
	// Bottom
	pulse->originY = gHeight / scale;
	pulse->dy = -scale;
	}
	} else {
	pulse->originY = rsRand(gHeight / PULSE_SIZE) * PULSE_SIZE;
	pulse->dy = 0;
	if (rsRand(1.f) > 0.5f) {
	// Left
	pulse->originX = 0;
	pulse->dx = scale;
	} else {
	// Right
	pulse->originX = gWidth * 2 / scale;
	pulse->dx = -scale;
	}
	}
	pulse->startTime = gNow + rsRand(MAX_DELAY);

	pulse->color = rsRand(4);

	pulse->pulseType = pulseType;
	if (pulseType == PULSE_EXTRA) {
	pulse->active = 0;
	} else {
	pulse->active = 1;
	}
	}

	void initPulses() {
	gNow = (int)rsUptimeMillis();
	int i;
	for (i=0; i<MAX_PULSES; i++) {
	initPulse(&gPulses[i], PULSE_NORMAL);
	}
	for (i=0; i<MAX_EXTRAS; i++) {
	struct pulse_s * p = &gExtras[i];
	p->pulseType = PULSE_EXTRA;
	p->active = 0;
	}
	}

	static void drawBackground() {
	rsgBindProgramFragment(gPFTexture565);
	rsgBindTexture(gPFTexture565, 0, gTBackground);
	if (gRotate) {
	rsgDrawRect(0.0f, 0.0f, gHeight*2, gWidth, 0.0f);
	} else {
	rsgDrawRect(0.0f, 0.0f, gWidth*2, gHeight, 0.0f);
	}
	}

	static void drawPulses(pulse_t * pulseSet, int setSize) {
	rsgBindProgramFragment(gPFTexture);
	rsgBindProgramStore(gPSBlend);

	rs_matrix4x4 matrix;
	rs_matrix4x4 modelMatrix;
	for (int i=0; i<setSize; i++) {
	struct pulse_s * p = &pulseSet[i];
	int delta = gNow - p->startTime;

	if (p->active != 0 && delta >= 0) {

	rsMatrixLoadIdentity(&modelMatrix);
	if (gRotate) {
	//matrixLoadRotate(modelMatrix, 90.0f, 0.0f, 0.0f, 1.0f);
	//matrixTranslate(modelMatrix, 0.0f, -height, 1.0f);
	// XXX: HAX: do not slide display in landscape
	} else {
	rsMatrixTranslate(&modelMatrix, -(gXOffset * gWidth), 0, 0);
	}
	rsMatrixScale(&modelMatrix, p->scale, p->scale, 1.0f);
	rsgProgramVertexLoadModelMatrix(&modelMatrix);

	float x = p->originX + (p->dx * SPEED * delta);
	float y = p->originY + (p->dy * SPEED * delta);

	rsMatrixLoadIdentity(&matrix);
	if (p->dx < 0) {
	rsgProgramVertexLoadTextureMatrix(&matrix);
	float xx = x + (TRAIL_SIZE * PULSE_SIZE);
	if (xx <= 0) {
	initPulse(p, p->pulseType);
	} else {
	setColor(p->color);
	rsgBindTexture(gPFTexture, 0, gTPulse);
	rsgDrawRect(x, y, xx, y + PULSE_SIZE, 0.0f);
	rsgBindTexture(gPFTexture, 0, gTGlow);
	rsgDrawRect(x + HALF_PULSE_SIZE - HALF_GLOW_SIZE,
	y + HALF_PULSE_SIZE - HALF_GLOW_SIZE,
	x + HALF_PULSE_SIZE + HALF_GLOW_SIZE,
	y + HALF_PULSE_SIZE + HALF_GLOW_SIZE,
	0.0f);
	}
	} else if (p->dx > 0) {
	x += PULSE_SIZE; // need to start on the other side of this cell
	rsMatrixRotate(&matrix, 180.0f, 0.0f, 0.0f, 1.0f);
	rsgProgramVertexLoadTextureMatrix(&matrix);
	float xx = x - (TRAIL_SIZE * PULSE_SIZE);
	if (xx >= gWidth * 2) {
	initPulse(p, p->pulseType);
	} else {
	setColor(p->color);
	rsgBindTexture(gPFTexture, 0, gTPulse);
	rsgDrawRect(xx, y, x, y + PULSE_SIZE, 0.0f);
	rsgBindTexture(gPFTexture, 0, gTGlow);
	rsgDrawRect(x - HALF_PULSE_SIZE - HALF_GLOW_SIZE,
	y + HALF_PULSE_SIZE - HALF_GLOW_SIZE,
	x - HALF_PULSE_SIZE + HALF_GLOW_SIZE,
	y + HALF_PULSE_SIZE + HALF_GLOW_SIZE,
	0.0f);
	}
	} else if (p->dy < 0) {
	rsMatrixRotate(&matrix, -90.0f, 0.0f, 0.0f, 1.0f);
	rsgProgramVertexLoadTextureMatrix(&matrix);
	float yy = y + (TRAIL_SIZE * PULSE_SIZE);
	if (yy <= 0) {
	initPulse(p, p->pulseType);
	} else {
	setColor(p->color);
	rsgBindTexture(gPFTexture, 0, gTPulse);
	rsgDrawRect(x, y, x + PULSE_SIZE, yy, 0.0f);
	rsgBindTexture(gPFTexture, 0, gTGlow);
	rsgDrawRect(x + HALF_PULSE_SIZE - HALF_GLOW_SIZE,
	y + HALF_PULSE_SIZE - HALF_GLOW_SIZE,
	x + HALF_PULSE_SIZE + HALF_GLOW_SIZE,
	y + HALF_PULSE_SIZE + HALF_GLOW_SIZE,
	0.0f);
	}
	} else if (p->dy > 0) {
	y += PULSE_SIZE; // need to start on the other side of this cell
	rsMatrixRotate(&matrix, 90.0f, 0.0f, 0.0f, 1.0f);
	rsgProgramVertexLoadTextureMatrix(&matrix);
	float yy = y - (TRAIL_SIZE * PULSE_SIZE);
	if (yy >= gHeight) {
	initPulse(p, p->pulseType);
	} else {
	setColor(p->color);
	rsgBindTexture(gPFTexture, 0, gTPulse);
	rsgDrawRect(x, yy, x + PULSE_SIZE, y, 0.0f);
	rsgBindTexture(gPFTexture, 0, gTGlow);
	rsgDrawRect(x + HALF_PULSE_SIZE - HALF_GLOW_SIZE,
	y - HALF_PULSE_SIZE - HALF_GLOW_SIZE,
	x + HALF_PULSE_SIZE + HALF_GLOW_SIZE,
	y - HALF_PULSE_SIZE + HALF_GLOW_SIZE,
	0.0f);
	}
	}
	}
	}

	rsMatrixLoadIdentity(&matrix);
	rsgProgramVertexLoadTextureMatrix(&matrix);
	}

	void addTap(int x, int y) {
	int count = 0;
	int color = rsRand(4);
	float scale = rsRand(0.9f, 1.9f);
	x = (x / PULSE_SIZE) * PULSE_SIZE;
	y = (y / PULSE_SIZE) * PULSE_SIZE;
	for (int i=0; i<MAX_EXTRAS; i++) {
	struct pulse_s * p = &gExtras[i];
	if (p->active == 0) {
	p->originX = x/scale;
	p->originY = y/scale;
	p->scale = scale;

	if (count == 0) {
	p->dx = scale;
	p->dy = 0.0f;
	} else if (count == 1) {
	p->dx = -scale;
	p->dy = 0.0f;
	} else if (count == 2) {
	p->dx = 0.0f;
	p->dy = scale;
	} else if (count == 3) {
	p->dx = 0.0f;
	p->dy = -scale;
	}

	p->active = 1;
	p->color = color;
	color++;
	if (color >= 4) {
	color = 0;
	}
	p->startTime = gNow;
	count++;
	if (count == 4) {
	break;
	}
	}
	}
	}

	int root() {
	rsgClearColor(0.f, 0.f, 0.f, 1.f);

	gWidth = rsgGetWidth();
	gHeight = rsgGetHeight();
	gRotate = gWidth > gHeight ? 1 : 0;

	gNow = (int)rsUptimeMillis();

	rs_matrix4x4 matrix;
	rsMatrixLoadIdentity(&matrix);

	if (gRotate) {
	//matrixLoadRotate(matrix, 90.0f, 0.0f, 0.0f, 1.0f);
	//matrixTranslate(matrix, 0.0f, -height, 1.0f);
	// XXX: HAX: do not slide display in landscape
	} else {
	rsMatrixTranslate(&matrix, -(gXOffset * gWidth), 0, 0);
	}

	rsgProgramVertexLoadModelMatrix(&matrix);

	drawBackground();
	drawPulses(gPulses, MAX_PULSES);
	drawPulses(gExtras, MAX_EXTRAS);

	return 45;
	}